This sets the initial jiffies value to
0x00000000fffb6c20, which can trigger 32-bit wraparound bugs .It is an
offset to the jiffies counter,so that it begins from a large value instead of
zero. So the wrap-around happens earlier,making it possible to detect any counter
wrap-around bugs much quicker regardless of the HZ
setting.

1.Suppose I
want to simulate the jiffies wraparound after 30 mins(1800sec) of reboot.Can I
change code as below in kernel?